Dr. Scott Hannum is a vascular surgeon practicing in Kissimmee, FL. Dr. Hannum specializes in disorders relating to the arterial, venous and lymphatic systems. As a vascular surgeon, Dr. Hannum diagnoses and treats vascular diseases and performs vasular surgeries. Common conditions that a vascular surgeon treats are aneurysms, atherosclerosis and varicose veins. Vascular specialists might also treat trauma, venous ulcers, poor leg circulation, peripheral arterial disease and other vascular-related issues.